I want to control a bipolar stepper motor via AN4988, and 4093 to generate clock signal.
Motors will run durin few secondes, and stopp during many hours, during off phases, motors must shut down.
In the AN4988 datasheet, two pins may are able to do this, pin SLEEP, and pin Enable, but wh’at is the difference betwwen them, and what’s pin is more able to do this, I must save maximum energy.
If I use sleep pin, where imust connect the Enable pint, and the reset pin ?
Sleep Mode To minimize power consumption
when the motor is not in use, this input disables much of the
internal circuitry including the output FETs, current regulator,
and charge pump. A logic low on the SLEEP pin puts the A4988
into Sleep mode. A logic high allows normal operation, as well as
start-up (at which time the A4988 drives the motor to the Home
microstep position). When emerging from Sleep mode, in order
to allow the charge pump to stabilize, provide a delay of 1 ms
before issuing a Step command.
This input turns on or off all of the
FET outputs. When set to a logic high, the outputs are disabled.
When set to a logic low, the internal control enables the outputs
as required. The translator inputs STEP, DIR, and MSx, as well as
the internal sequencing logic, all remain active, independent of the ENABLE input state.